Phys. Rev. A 48, 4787 - 4789 (1993)Convergent close-coupling calculations of low-energy positron–atomic-hydrogen scattering |
Igor Bray
Electronic Structure of Materials Centre, The Flinders University of South Australia, G.P.O. Box 2100, Adelaide 5001, Australia
Andris T. Stelbovics
Centre for Atomic, Molecular and Surface Physics, School of Mathematical and Physical Sciences, Murdoch University, Perth 6150, Australia
Received 2 July 1993
The convergent close-coupling approach developed by the authors is applied to positron scattering from atomic hydrogen below the first excitation threshold. In this approach the multichannel-expansion one-electron states are obtained by diagonalizing the target Hamiltonian in a large Laguerre basis. It is demonstrated that this expansion of the scattering wave function is sufficient to reproduce the very accurate low-energy variational results, provided target states with l≤15 are included in the expansions.
©1993 The American Physical Society
URL: http://link.aps.org/abstract/PRA/v48/p4787
DOI: 10.1103/PhysRevA.48.4787
PACS: 34.80.Bm, 25.30.Hm
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